Failsafe Mode

If a login problem occurs and you cannot use the zlogin command or
the zlogin command with the -C option to access the zone, an alternative
is provided. You can enter the zone by using the zlogin command with
the -S (safe) option. Only use this mode to recover a damaged zone
when other forms of login are not succeeding. In this minimal environment, it
might be possible to diagnose why the zone login is failing.